With #27. if you can do at least two and explain how

you

Alright, so to do this, you need to know the name of the elements and compounds, since all of these are ionic compounds which have different naming rules than covalent compounds, all you need is a periodic table and an ion chart. I'll do the first column.

A. Calcium Nitrate

B. Potassium Hydroxide

C. Magnesium Carbonate.

I also am including a picture of an ion chart that include almost all of the ions to help you with the rest of them.

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain